Human Interferon a2b Spray can be sprayed or applied directly to the surface of the skin at the site of the lesion. This medicine is mainly applied to cutaneous herpes virus infections and genital herpes virus infections, for example, herpes on the vulva. When applying the medicine do not have contact with other skin between to avoid cross infection. And pay attention to the cleanliness and hygiene of the skin, each time before the application of the need to rinse the lesion area of the skin with saline clean and dry before using the spray. After each application of the drug should be observed after the use of adverse reactions, such as: there is no allergic phenomenon, etc.. Adverse effects of the drug include headache, fever, chills, myalgia, and malaise. The main contraindications to the use of the drug are: allergy to any of the ingredients is prohibited, pregnant women are prohibited, oral intake is prohibited, it is not allowed to use it with other drugs, and it is stored at room temperature. Before using the drug, you should ask the doctor’s opinion, not to use the drug on their own, to avoid the impact on the body.